Also, do you like the nuke upgrade for the mortar guns? They are powerful in some ways, but the mushroom clouds block everything. If you have 5-10 of them shooting the rockets, you can't see a darn thing on the field!

Yeah, I suspect the Giza map is about directing traffic to choke points. I tried all sorts of variations, some lasted longer than others. Only if I had more money for the upgrades! I've pretty much just given up on the air defense on one side and let them take the sheep. That seems to last me for a while, but it leaves very small margin for error on the ground.